Question

find the inverse of the coefficient matrix of the equations 5x + y = 13, 3x + 2y = 5 and hence solve the equation.​

Answer 1

Answer:

X=1.6 Y=21.07

Step-by-step explanation:

5x + y = 13, 3x + 2y = 5

y = 13 + 5x

3x + 2(13 + 5x) = 5

3x + 26 + 10x = 5

13x = 5 - 26

x = -21/13

x = 1.6153846154

y = 21.076923077